| Description | Date | Identifier | |
| Page of abstracts for various engineering improvements and patents. | 17th Oct 1940 | Box 147 \ 4 scan0133 | |
| Summary of patents related to ignition distributors and fuel injection pumps. | 24th Oct 1940 | Box 147 \ 4 scan0134 | |
| Report from Claremont Haynes & Co. on outside patent searches listing several specifications. | 24th Oct 1940 | Box 147 \ 4 scan0135 | |
| List of patent abstracts with numbers, patentees, titles, and brief descriptions. | 24th Oct 1940 | Box 147 \ 4 scan0136 | |
| Summary of inventions related to an engine silencer and a parallel-cylinder diesel engine mechanism. | 20th Nov 1940 | Box 147 \ 4 scan0137 | |
| The distribution of lists from British patent searches. | 20th Nov 1940 | Box 147 \ 4 scan0138 | |
| Patent searches for the week ending 31st October 1940. | 31th Oct 1940 | Box 147 \ 4 scan0139 | |
| List of patent specifications with corresponding numbers, patentees, and titles. | 24th Oct 1940 | Box 147 \ 4 scan0140 | |
| Report by Claremont Haynes & Co. on outside patent searches, listing recent applications. | 24th Oct 1940 | Box 147 \ 4 scan0141 | |
| Report by Claremont Haynes & Co. on outside patent searches for the week ending 31st October 1940. | 31th Oct 1940 | Box 147 \ 4 scan0142 | |
| Patent search report by Claremont Haynes & Co. detailing specifications for four different inventions. | 31th Oct 1940 | Box 147 \ 4 scan0143 | |
| Summary of four patents related to distributors, heating, lubrication, and carburetters. | 31th Oct 1940 | Box 147 \ 4 scan0144 | |
| List of patents related to internal combustion engines and carburettors. | 23th Nov 1940 | Box 147 \ 4 scan0145 | |
| Re-routing specifications for chassis design work for patent research. | 23th Nov 1940 | Box 147 \ 4 scan0146 | |
| Specification for Patent No. 525879, related to a piston protuberance. | 26th Mar 1941 | Box 147 \ 4 scan0147 | |
| Patent specification for improvements to the combustion chambers of internal combustion engines. | 21th Dec 1938 | Box 147 \ 4 scan0148 | |
| Complete specification for improvements to combustion chambers in internal combustion engines. | 20th Jan 1940 | Box 147 \ 4 scan0149 | |
| Patent specification drawings for an internal combustion engine cylinder head and valve mechanism. | 16th May 1939 | Box 147 \ 4 scan0150 | |
| Provisional patent specification for improvements in cylinders of internal combustion engines. | 16th May 1939 | Box 147 \ 4 scan0151 | |
| Complete specification document for an invention related to the cylinders of internal combustion engines. | 16th Oct 1937 | Box 147 \ 4 scan0152 | |
| Patent claims for an internal combustion engine design. | 17th Oct 1938 | Box 147 \ 4 scan0153 | |
| Complete specification drawing illustrating different designs for an internal combustion engine cylinder head and valve gear. | 15th May 1941 | Box 147 \ 4 scan0154 | |
| Critiquing and dismissing a patent specification for an improved fluid drive transmission mechanism as 'very hopeless'. | 15th May 1941 | Box 147 \ 4 scan0155 | |
| Letter from an inventor proposing a new transmission method for internal combustion engines. | 13th Jan 1941 | Box 147 \ 4 scan0156 | |
| Diagram illustrating an improved fluid drive transmission mechanism. | 13th Jan 1941 | Box 147 \ 4 scan0157 | |
| Invention for an improved fluid drive transmission mechanism to replace manual gears and clutches in an automobile. | 13th Jan 1941 | Box 147 \ 4 scan0158 | |
| Detailed description of a differential gear and drive shaft assembly, including a fluid-filled reservoir and vaned rotor. | 13th Jan 1941 | Box 147 \ 4 scan0159 | |
| Description of the operation of a rotor with fins and vanes within a fluid-filled differential gear system. | 13th Jan 1941 | Box 147 \ 4 scan0160 | |
| Description of a variable speed gear mechanism using oil pressure to create a coupling and drive for an automobile. | 16th May 1941 | Box 147 \ 4 scan0161 | |
| Packard's retaliation for a copied radiator grille by naming their new model the Clipper. | 16th May 1941 | Box 147 \ 4 scan0162 | |
| Potential names for post-war Bentley and Rolls-Royce models. | 19th May 1941 | Box 147 \ 4 scan0163 | |
| Letter to R. Benson in Australia regarding a submission about the reaction of a rotor at 1000 r.p.m. | 20th May 1941 | Box 147 \ 4 scan0164 | |
| The cost to register a trademark for post-war car names in Great Britain and the United States. | 22th May 1941 | Box 147 \ 4 scan0165 | |
| Requesting the registration of potential names for post-war cars in the UK and America. | 26th May 1941 | Box 147 \ 4 scan0166 | |
| The filing of Trade Marks for Post War car names for Bentley and Rolls-Royce. | 16th Jun 1941 | Box 147 \ 4 scan0167 | |
| Short internal memo stating a lack of interest in Patent 342756 - STAUDE. | 30th Jun 1941 | Box 147 \ 4 scan0168 | |
| Follow-up memo regarding interest in an arrangement for Patent 342756 - Staude. | 23th Jun 1941 | Box 147 \ 4 scan0169 | |
| Declining the use of certain blocks for Instruction Book work. | 9th Jul 1941 | Box 147 \ 4 scan0170 | |
| Confirming the filing of a specification and drawing for the Aspin Rotary Valve application. | 22th Jul 1941 | Box 147 \ 4 scan0171 | |
| Complete patent specification for an improved rotary valve and its driving gear. | 13th Aug 1940 | Box 147 \ 4 scan0172 | |
| Description of an improved rotary valve and driving gear for an internal-combustion engine. | 13th Aug 1940 | Box 147 \ 4 scan0173 | |
| Varying valve velocity to increase port-area in an internal combustion engine. | 13th Aug 1940 | Box 147 \ 4 scan0174 | |
| Description of a rotary valve and its driving gear mechanism with reference to diagrams. | 13th Aug 1940 | Box 147 \ 4 scan0175 | |
| Description of a rotary valve mechanism and its timing with reference to Figure 3. | 13th Aug 1940 | Box 147 \ 4 scan0176 | |
| Description of the timing and operation of an engine's inlet and exhaust valve mechanism, comparing its efficiency to poppet-valves. | 13th Aug 1940 | Box 147 \ 4 scan0177 | |
| Page from a patent document detailing claims for a rotary valve system in an internal combustion engine. | 18th Jul 1941 | Box 147 \ 4 scan0178 | |
| Specification for a rotary valve and driving gear for a four-stroke internal-combustion engine. | 18th Jul 1941 | Box 147 \ 4 scan0179 | |
| Diagrams showing a cross-section, top view, and force/timing diagram of a mechanical assembly. | 11th Nov 1941 | Box 147 \ 4 scan0180 | |
| Decision not to patent a remote control for A-A gun sights. | 11th Nov 1941 | Box 147 \ 4 scan0181 | |
| Photograph of a remote control sighting system test rig with labelled components. | 11th Nov 1941 | Box 147 \ 4 scan0182 | |
| Photograph of an electromechanical apparatus featuring a remote control box with a joystick and targeting sights. | 28th Apr 1942 | Box 147 \ 4 scan0183 | |
| History of the development and patenting of the 'T' slotted aluminium piston to address cold knocking issues. | 28th Apr 1942 | Box 147 \ 4 scan0184 | |
| British patent searches for the week ending 15th April 1942. | 15th Apr 1942 | Box 147 \ 4 scan0185 | |
| British patent searches listing specifications which have become open to public inspection. | 15th Apr 1942 | Box 147 \ 4 scan0186 | |
| Report by Claremont Haynes & Co. on British patent specifications of interest. | 15th Apr 1942 | Box 147 \ 4 scan0187 | |
| List of patent summaries for rotary engines, internal combustion engines, and speed governors. | 20th May 1942 | Box 147 \ 4 scan0188 | |
| Cover letter sending a copy of the complete specification for a Tank Steering Gear application. | 20th May 1942 | Box 147 \ 4 scan0189 | |
| Complete patent specification for improvements to steering gear for tanks and tracked vehicles. | 15th May 1941 | Box 147 \ 4 scan0190 | |
| Description of an invention related to steering gear for tanks and endless-track vehicles. | 15th May 1941 | Box 147 \ 4 scan0191 | |
| Description of an invention for a driving and steering gear using a supplementary drive with slipping and reversing clutches. | 15th May 1941 | Box 147 \ 4 scan0192 | |
| Description of a preferred construction for a gear system involving slipping and reversing clutches. | 15th May 1941 | Box 147 \ 4 scan0193 | |
| Description of a controlled-differential driving and steering gear system for a tracked vehicle using epicyclic gears. | 15th May 1941 | Box 147 \ 4 scan0194 | |
| Description of a supplementary drive system using a V-belt, clutch, and bevel-gear box to rotate wheels. | 15th May 1941 | Box 147 \ 4 scan0195 | |
| Technical description of a clutch and gearing mechanism, detailing its components and operation. | 15th May 1941 | Box 147 \ 4 scan0196 | |
| Detailed description of a dual cone clutch and reversing mechanism. | 15th May 1941 | Box 147 \ 4 scan0197 | |
| Detailed explanation of the operation of a compressed air-actuated clutch and steering mechanism. | 15th May 1941 | Box 147 \ 4 scan0198 | |
| Description of a clutch, gearbox, and differential gear mechanism for vehicle steering and drive, referencing associated figures. | 15th May 1941 | Box 147 \ 4 scan0199 | |
| Page 11 of a document describing the operation of a differential gear, slipping clutch, and planet carrier system for turning a tank. | 15th May 1941 | Box 147 \ 4 scan0200 | |
| Description of the advantages of a new epicyclic gear and clutch arrangement over prior designs. | 15th May 1941 | Box 147 \ 4 scan0201 | |
| Patent claim for a driving and steering gear for endless-track vehicles. | 15th May 1941 | Box 147 \ 4 scan0202 | |
| Page 14 of a patent document detailing claims for a gear and clutch mechanism. | 15th May 1942 | Box 147 \ 4 scan0203 | |
| Patent claims for a driving and steering gear for an endless-track vehicle. | 15th May 1942 | Box 147 \ 4 scan0204 | |
| Schematic and cross-sectional diagrams of a mechanical power transmission and control assembly. | 27th May 1942 | Box 147 \ 4 scan0205 | |
| Letter to Mr. K.T. Keller of Chrysler regarding patent litigation for Split Skirt Aluminium Pistons. | 27th May 1942 | Box 147 \ 4 scan0206 | |
| The history and patent information for 'T' slotted aluminum pistons. | 28th Apr 1942 | Box 147 \ 4 scan0207 | |
| Brief typed note acknowledging a previous communication regarding Split Skirt Aluminium Pistons. | 27th May 1942 | Box 147 \ 4 scan0208 | |
| British outside patent searches listing specifications of potential interest. | 1st Dec 1943 | Box 147 \ 4 scan0209 | |
| Abstract for a patent concerning a device with multi-lobe cams for timing variation. | 11th Apr 1944 | Box 147 \ 4 scan0210 | |
| Letter from E. Rosenblum delaying the submission of invention drawings to incorporate improvements. | 17th Feb 1944 | Box 147 \ 4 scan0211 | |
| Letter from an inventor requesting an interview to discuss a patented mechanism that eliminates the gearbox and clutch. | 19th Jan 1944 | Box 147 \ 4 scan0212 | |
| Letter from an inventor offering a patented design for an automatic gearbox. | 27th Jan 1944 | Box 147 \ 4 scan0213 | |
| Letter declining an in-person interview due to war-work pressures, but inviting particulars of an invention for consideration. | 1st Feb 1944 | Box 147 \ 4 scan0214 | |
| Letter to Edward Rosenblum requesting documents for an invention on coupling engines to driving wheels. | 7th Feb 1944 | Box 147 \ 4 scan0215 | |
| Letter to S. Sokal, Esq. declining interest in patent specifications. | 29th Feb 1944 | Box 147 \ 4 scan0216 | |
| Covering letter regarding patents from S. Sokal. | 28th Feb 1944 | Box 147 \ 4 scan0217 | |
| Letter from a patent attorney offering patents for sale or license to Bentley Motors. | 24th Feb 1944 | Box 147 \ 4 scan0218 | |
| Fuel consumption and weight calculations for a run from Monte Carlo to London. | 21th May 1906 | Box 147 \ 5 scan0001 | |
| Fuel consumption and road test results for several cars. | 26th Nov 1907 | Box 147 \ 5 scan0002 | |
| Fuel consumption test data recorded during a hill climb up Snake Hill. | 10th Aug 1906 | Box 147 \ 5 scan0003 | |
| Notes on road tests detailing weight, speed, and fuel consumption for two cars. | 13th Dec 1907 | Box 147 \ 5 scan0004 | |
| Fuel consumption road test comparing a single jet with a two jet setup. | 23th Apr 1908 | Box 147 \ 5 scan0005 | |
| Fuel consumption test results under various special driving conditions for car 7#1. | 10th May 1908 | Box 147 \ 5 scan0006 | |
| Consumption test results for a chassis tested on a dynamometer. | 11th Nov 1909 | Box 147 \ 5 scan0007 | |
| Petrol consumption tests for different fuel types on vehicle 1188. | 12th May 1910 | Box 147 \ 5 scan0008 | |
| Performance and consumption statistics for the 'Silver Ghost' model. | 5th Oct 1910 | Box 147 \ 5 scan0009 | |
| Record of petrol consumption tests for car X459 with different carburettor settings. | 3rd Nov 1910 | Box 147 \ 5 scan0010 | |
| Departmental memo detailing fuel consumption tests comparing a Rolls-Royce car with a Metallurgique car. | 9th Nov 1910 | Box 147 \ 5 scan0011 | |
| Fuel consumption test record for a carburettor on a 1500 type engine. | 9th Jan 1911 | Box 147 \ 5 scan0012 | |
| Horse power per gallon consumption test record for a Polyrhoe carburettor with an R.R. made throttle. | 9th Jan 1911 | Box 147 \ 5 scan0013 | |
| Comparison of horsepower output between an R.R. carburettor and a Polyrhoe carburettor on a 1500 type engine. | 9th Jan 1911 | Box 147 \ 5 scan0014 | |
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